At the outlier of Okinawa, Akio leads an indulgent life running a variety store with his beloved dog KAFOO (means happy in Okinawa dialect). One day, Akio receives a letter from girl named Sachi. "Please let me be your bride." It was an answer to Akio's wish written on a wooden plaque that he wrote at a shrine when he traveled, "Would you be my bride?” One day, Akio half in doubt, a beautiful, mysterious girl named Sachi comes to him. Here presents a resonating love story, to know what true "KAFOO" is.